At the very least we need to ensure that we can live with this API for GA and
extend it to new types without breaking compatibility.

Andrew, could you review the current state of play and decide whether we are good enough for now (in which case we can close this) or whether specific actions need to be taken (in which case outline them and reassign if necessary).

* The current Field Table API supports sufficiently many types to be very useful as is. However:

- the current API is not tidy or very consistent, so I think that it still needs changes.

- Especially the treatment of (the many types of) integers and strings needs to be improved.

- The overall C++ API is still missing support for sequences (of different types)

In summary though the API is currently adequate.